Define: Dictum

Quick Summary of Dictum

Dictum, in a legal context, refers to a statement or opinion made by a judge in a legal opinion or decision that is not directly relevant to the case’s outcome or binding as precedent. While dictum may provide guidance or insight, it does not have the same authoritative weight as the holding or ratio decidendi of a case. Dictum statements are often considered persuasive rather than binding authority in future legal proceedings. However, dicta from higher courts or respected jurists may still carry significant influence in shaping legal interpretations and arguments.

What is the dictionary definition of Dictum?
Dictionary Definition of Dictum

A formal pronouncement from an authoritative source.

n. Latin for “remark,” a comment by a judge in a decision or ruling that is not required to reach the decision, but may state a related legal principle as the judge understands it. While it may be cited in a legal argument, it does not have the full force of a precedent (previous court decisions or interpretations) since the comment was not part of the legal basis for judgement. The standard counterargument is: “it is only dictum (or dicta).

  1. An authoritative statement; a dogmatic saying; a maxim, an apothegm.
  2. A judicial opinion is expressed by judges on points that do not necessarily arise in the case, and are not involved in it.
  3. The report of a judgement made by one of the judges who has given it.
  4. An arbitrament or award.
Full Definition Of Dictum

A remark, statement or observation of a judge that is not a necessary part of the legal reasoning needed to reach the decision in a case. Although a dictum may be cited in a legal argument, it is not binding as a legal precedent, meaning that other courts are not required to accept it. For example, if a defendant ran a stop sign and caused a collision, the judge’s comments about the mechanical reliability of the particular make of the defendant’s car would not be necessary to reach a decision in the case and would be considered dictum. In future cases, lower court judges are free to ignore the comments when reaching their decisions. Dictum is an abbreviation of the Latin phrase “obiter dictum,” which means a remark by the way, or an aside.

In the realm of legal discourse, the term “dictum” holds significant importance. Derived from the Latin word meaning “a thing said,” dictum refers to a statement or comment made by a judge that is not essential to the decision in a case. Though not binding as a precedent, dicta can influence future judgments and legal reasoning. This legal overview aims to explore the concept of dictum, its types, relevance in judicial decisions, and its implications in the common law system, particularly in British jurisprudence.

Definition and Nature of Dictum

Dictum, or obiter dictum (plural: dicta), contrasts with the ratio decidendi, which is the binding element of a judgment. While the ratio decidendi encompasses the legal principles and rationale upon which the case’s outcome depends, dicta are supplementary observations or remarks made by the judge. These observations, although persuasive, do not have the binding force of the ratio.

Types of Dictum

Dicta can be categorized into various types based on their context and relevance:

  1. Obiter Dictum: This is the most common form, referring to any statement in a judgment that is not part of the ratio decidendi. These remarks are often made in passing and may address hypothetical situations, broader legal principles, or provide additional commentary on the case.
  2. Judicial Dictum: These statements, while still non-binding, hold more weight as they come from authoritative figures such as superior court judges. They can influence lower courts and future judicial reasoning more significantly than obiter dicta from lower courts.
  3. Constructive Dictum: This involves detailed hypothetical reasoning that a judge might use to illustrate how a decision would apply to different facts. Constructive dicta can be insightful for understanding the judge’s thought process and the potential application of legal principles.

Relevance and Impact

Despite their non-binding nature, dicta can shape the development of law in several ways:

  1. Persuasive Authority: Dicta can serve as persuasive authority, especially when originating from higher courts. Lower courts may refer to dicta from superior courts as guiding opinions that, while not mandatory, offer valuable insights into legal interpretation.
  2. Legal Reasoning and Development: Dicta often reflect a judge’s broader legal philosophy and reasoning. By examining dicta, future judges and legal scholars can gain a deeper understanding of legal principles and their potential applications, aiding in the evolution of case law.
  3. Clarification of Law: Dicta can clarify ambiguous areas of law by providing additional context and interpretation. Even though not binding, these clarifications can guide practitioners and litigants in understanding and applying legal principles.
  4. Legislative Influence: Legislators may consider dicta when drafting or amending laws. Judicial observations about the inadequacies or strengths of existing legislation can inform legislative reforms.

Historical Context and Evolution

The role and influence of dictum have evolved over time. In early common law, the distinction between ratio decidendi and dictum was less pronounced. As the legal system matured, the need for consistency and predictability led to a clearer demarcation. The doctrine of precedent (stare decisis) underscored the importance of distinguishing between binding and non-binding elements of judgments.

In British legal history, notable dicta have shaped significant areas of law. For instance, Lord Denning’s dicta in various cases have often been cited for their eloquent articulation of legal principles and their forward-looking nature. Although sometimes controversial, his dicta have contributed to legal debates and reforms.

Case Studies

To illustrate the role and impact of dicta, it is helpful to examine specific cases:

  1. Donoghue v Stevenson (1932): In this landmark case, Lord Atkin’s dictum introduced the “neighbour principle,” which became foundational in the development of negligence law. Although not the ratio decidendi, his statement that one must take reasonable care to avoid acts or omissions likely to injure one’s neighbour significantly influenced subsequent case law and legislative developments.
  2. Hedley Byrne & Co Ltd v Heller & Partners Ltd (1964): In this case, dicta played a crucial role in the recognition of negligent misstatement as a tort. The House of Lords, while deciding on the specifics of the case, made observations about the broader applicability of duty of care in situations involving reliance on professional advice.
  3. R v Brown (1993): This case involved a group of individuals engaging in consensual sadomasochistic activities, resulting in bodily harm. The House of Lords held that consent was not a defence to charges of assault causing actual bodily harm. The dicta in this case delved into the limits of consent in criminal law, influencing later decisions and debates on bodily autonomy and criminal liability.

Criticisms and Controversies

The use of dicta is not without criticism. Some legal scholars argue that dicta can lead to confusion, as distinguishing between ratio decidendi and obiter dicta is not always straightforward. Additionally, excessive reliance on dicta may undermine the doctrine of precedent by introducing too much flexibility and uncertainty into legal reasoning.

Furthermore, judges may sometimes use dicta to express personal views or hypothetical scenarios that are not directly relevant to the case at hand. This can lead to debates about the appropriateness and impact of such comments, particularly when they influence future judicial decisions or legislative actions.


Dictum, while not binding, plays a vital role in the common law system. It offers insight into judicial reasoning, guides future legal interpretation, and can influence legislative developments. Understanding the nuances of dicta and their distinction from ratio decidendi is essential for legal practitioners, scholars, and students.

The examination of landmark cases and their dicta demonstrates how these judicial observations can shape the evolution of legal principles. Despite criticisms, the persuasive power of dicta ensures that they remain a significant component of legal discourse.

In the British legal context, dictum continues to be a valuable tool for clarifying, interpreting, and developing the law. As the legal system evolves, the role of dictum will likely continue to be a subject of discussion and analysis, reflecting the dynamic nature of jurisprudence.

Related Phrases
No related content found.

This site contains general legal information but does not constitute professional legal advice for your particular situation. Persuing this glossary does not create an attorney-client or legal adviser relationship. If you have specific questions, please consult a qualified attorney licensed in your jurisdiction.

This glossary post was last updated: 10th June 2024.

Cite Term

To help you cite our definitions in your bibliography, here is the proper citation layout for the three major formatting styles, with all of the relevant information filled in.

  • Page URL:
  • Modern Language Association (MLA):Dictum. DLS Solicitors. June 16 2024
  • Chicago Manual of Style (CMS):Dictum. DLS Solicitors. (accessed: June 16 2024).
  • American Psychological Association (APA):Dictum. Retrieved June 16 2024, from website:
Avatar of DLS Solicitors
DLS Solicitors : Family Law Solicitors

Our team of professionals are based in Alderley Edge, Cheshire. We offer clear, specialist legal advice in all matters relating to Family Law, Wills, Trusts, Probate, Lasting Power of Attorney and Court of Protection.

All author posts